Tool-post



(No Model.)

W. K. JAGGER.

' TOOL POST,

No. 576,128. Patefited Feb. 2, 1897.

5 nazizz -UNITED STATES PATENT OFFICE.

\VILLIAM K. JAGGER, OF CHESTER, PENNSYLVANIA.

TOOL-=POST.

SPECIFICATION forming part of Letters Patent No. 576,128, dated February2, 1897. Application filed April 18, 1896. Eerial No. 588,105. (Nomodel.)

1'0 all whom it may concern:

Be it known that I, WILLIAM K. J AGGER, a citizen of the United States,residing at Chester, in the county of Delaware and State ofPennsylvania, have invented certain new and useful Improvements inTool-Posts and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

My invention relates to improvements in tool-posts forslotting-machines, the object of the same being to provide a device ofthis kind which will enable the tool to be held securely in place and tobe adjusted at any angle to the work that may be desired.

In all devices of this character which have preceded the present onegreat difficulty has arisen by reason of the fact that it is necessaryto take the tool from its clamp or detach the post from the machine inorder to change the angle for the purpose of cutting along two edges ofa sheet of metal. I obviate these difficulties by my invention, whichconsists of a tool-post made up of two main parts, one of which isgenerally rectangular in form, is bored out longitudinally, and haspassing through it the spindle of a head-piece or clamp through alateral slot, in which the tool is adapted to be inserted. The upper endof the spindle is screw-threaded and hasa nut passing around it, bymeans of which the head and the lower end of the tool-post are adaptedto be drawn together. The said lower end of the tool-post proper isformed with an octagonal recess, into which fits a similarly-shapedshoulder on the lower end of the spindle. By this means the head-piececarrying the tool maybe adjusted to any desired angle within certainlimits to the work and be rigidly held in such adjusted position.

The invention is clearly illustrated in the accompanying drawings, inwhich Figure 1 represents a side elevation of my device. Fig. 2 is alongitudinal sectional View through the same. Fig. 3 is a side elevationof the head-piece and its spindle, showing the lateral slot therein..Fig. 4 is a cross-section on the line X X of Fig. 1. Fig. 5 is a detailperspective view of one of the tools.

Like reference-numerals indicate like parts in the different views.

My tool-post is made up of the post proper, 1, which is rigidly securedto an operative part of the slotting-machine and has a reciprooatingmovement imparted to it thereby. This post is preferably rectangular inshape, is bored out longitudinally, and is formed at its lower end witha polygonal depression or recess 2. In the drawings this recess 2 isshown octagonal in shape, but it is obvious that any desired form may beemployed. The head-piece 3 acts in engagement with the post 1, isprovided with a spindle 4:, extending upwardly through the post 1, andhas screw-. threads 5 upon its upperouterend. The head 3 is formed witha shoulder 6 and a lateral slot 7, through which a tool 8 is adapted tobe inserted. Between the shoulder 6 and the spindle l the saidhead-piece 3 is formed with a polygonal enlargement 9 of the same shapeas the depression 2 in the post 1, the said enlargement of thehead-piece and said depression permitting the angular adjustment of thehead-piece 3 relative to the post 1.

In using my device the shank. of the tool 8 is inserted through the slot7 and a nut 10, screwed down upon-the upper end of the spindle 4. Theedge of the said tool 8 projects slightly above the shoulder 6, so thatit is brought into engagement with the lower end of the post 1. Byscrewing the nut 10 tightly upon the end of the spindle 4 the tool isclamped firmly in place.

In case it is desired to cut an angle at right angles to that in whichthe tool has been'used it is only necessary to loosen the nut 10, pushdown the head-piece 3 by its spindle 4, turn said head-piece through anarc of ninety degrees, and replace the nut. In doing this theenlargement 9, by reason of its angularly-arranged sides correspondingwith those of the depression 2 and fitting in the latter, holds thehead-piece 3 and the tool 8 rigidly in adjusted position.

In case it is desired to use the tool on smaller angles the same can bedone by adjusting the head-piece relatively to the post 1 at anintermediate point.

Having now described my invention, what I I 0 claim as new, and desireto secure by Letters Patent, is-- 1. The combination with a tool-postproper, which is adapted to be rigidly secured in a slot or othermachine and to have a reciprocating motion imparted to it, the said postbeing longitudinally bored and provided with a polygonal depression atits lower end, of a head-piece having a spindle passing through saidpost provided with threads upon its upper end, a nut engaging saidthreads, a polygonal enlargement at the lower end thereof and means forsecuring the tool in the headpiece, substantially as described.

2. The combination with a tool-postproper, which is adapted to berigidly secured in a slot or other machine and to have a reciproeatingmotion imparted to it, the said post bein g longitudinally bored andprovided with a polygonal depression at its lower end, of a head-pieceformed with a shoulder which is adapted to bear against the lower end ofsaid post and having a spindle passing through said post provided withthreads upon its upper end, a nut engaging said threads, a polygonalenlargement at the lower end thereof and means for securing the tool inthe head piece, substantially as and for the purpose described.

3. The combination with a tool-post proper, which is adapted to berigidly secured in a slot or other machine and to have a reciprocatin gmotion imparted to it, the saidpost be

